It is unknown if there was a Studio I.
After RCA let the rights to Odyssey go to Magnavox, they scrambled to get a gaming system out.
It did not sell well.
Unlike competitors, they failed to get licenses to manufacture popular arcade games.
RCA only produced nine games.
Half of the games were programmed by one person (Andrew Modla of Tekla Inc.).
The games require instructions, even to know which keys to press to start the game.
It was monochrome.
Because it lacked color, it seemed primitive compared to the competitors Atari and Fairchild Channel F.
Although the games were written in color, the system could only show them in black and white.
The graphics were large blocks.
It used a numeric key board with the game paddles affixed to the console.
It did not have an 'on' switch.
They bragged 'with the Studio II, you'll transform the TV set in your home into an electronic entertainment and educational center for the entire family.'

Why RCA Studio II might not be annoying

It was the second console to use fully programmable cartridges (Fairchild F was first).
To get parents interested, they released an educational software.
The used their own exclusive processor, the RCA COSMAC 1802.

In 2018, Out of 12 Votes: 50.0% Annoying
In 2017, Out of 15 Votes: 60.0% Annoying
In 2016, Out of 1 Votes: 0% Annoying
In 2015, Out of 4 Votes: 25.00% Annoying
In 2014, Out of 20 Votes: 55.00% Annoying
In 2013, Out of 19 Votes: 63.16% Annoying
In 2012, Out of 10 Votes: 60.0% Annoying
In 2011, Out of 10 Votes: 90.0% Annoying
In 2010, Out of 64 Votes: 65.62% Annoying
In 2009, Out of 18 Votes: 77.78% Annoying
In 2008, Out of 52 Votes: 71.15% Annoying
In 2007, Out of 74 Votes: 66.22% Annoying
In 2006, Out of 109 Votes: 66.97% Annoying